US6425331B1 - Permanent heat activated printing process - Google Patents
Permanent heat activated printing process Download PDFInfo
- Publication number
- US6425331B1 US6425331B1 US09/206,262 US20626298A US6425331B1 US 6425331 B1 US6425331 B1 US 6425331B1 US 20626298 A US20626298 A US 20626298A US 6425331 B1 US6425331 B1 US 6425331B1
- Authority
- US
- United States
- Prior art keywords
- heat activated
- printer
- activated dye
- ink
- printing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/32—Inkjet printing inks characterised by colouring agents
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- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
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- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
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- B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
- B41J2/325—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads by selective transfer of ink from ink carrier, e.g. from ink ribbon or sheet
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- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
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- B41M5/0256—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet the transferable ink pattern being obtained by means of a computer driven printer, e.g. an ink jet or laser printer, or by electrographic means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
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- B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
- B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
- B44C1/17—Dry transfer
- B44C1/1712—Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
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- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
- B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
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- B44C1/1712—Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
- B44C1/1716—Decalcomanias provided with a particular decorative layer, e.g. specially adapted to allow the formation of a metallic or dyestuff layer on a substrate unsuitable for direct deposition
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/32—Inkjet printing inks characterised by colouring agents
- C09D11/328—Inkjet printing inks characterised by colouring agents characterised by dyes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/34—Hot-melt inks
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/003—Transfer printing
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
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- D06P5/004—Transfer printing using subliming dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
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- D06P5/004—Transfer printing using subliming dyes
- D06P5/006—Transfer printing using subliming dyes using specified dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/003—Transfer printing
- D06P5/007—Transfer printing using non-subliming dyes
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/65—Apparatus which relate to the handling of copy material
- G03G15/6588—Apparatus which relate to the handling of copy material characterised by the copy material, e.g. postcards, large copies, multi-layered materials, coloured sheet material
- G03G15/6591—Apparatus which relate to the handling of copy material characterised by the copy material, e.g. postcards, large copies, multi-layered materials, coloured sheet material characterised by the recording material, e.g. plastic material, OHP, ceramics, tiles, textiles
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- G—PHYSICS
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- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/09—Colouring agents for toner particles
- G03G9/0926—Colouring agents for toner particles characterised by physical or chemical properties
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- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
- B41M5/035—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic
- B41M5/0356—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic characterised by the inks used for printing the pattern on the temporary support or additives therefor, e.g. dyes, transferable compounds, binders or transfer promoting additives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0027—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or layers by lamination or by fusion of the coatings or layers
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- G—PHYSICS
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- G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
- G03G2215/00443—Copy medium
- G03G2215/00523—Other special types, e.g. tabbed
- G03G2215/00527—Fabrics, e.g. textiles
Definitions
- This invention relates to printing generally, and is more specifically directed to a method of printing heat activated ink by means of an ink jet printer onto paper or other printable substrate as a medium, and subsequently heat activating the ink, thereby transferring the design formed by the ink from the medium to a substrate on which the design is to permanently appear.
- Words and designs are frequently printed onto clothing and other textile materials, and other objects. Common means of applying such designs to objects include the use of silk screens, and mechanically bonded thermal transfers.
- Video cameras or scanning may be used to capture an image to a computer.
- the image may then be printed by any suitable printing means, including mechanical thermal printers, ink jet printers and laser printers. These printers will print in multiple colors.
- Color ink jet printers are in common use. Color ink jet printers use combinations of cyan, yellow and magenta inks or dyes to produce multi-color images.
- phase change The primary types of ink jet printers currently in use fall into three categories: phase change, free flow, and bubble jet.
- the inks or dyes used in phase change ink jet printing are contained in a solid compound which changes state by the application of heat to liquify the solid, whereupon the ink composition is printed.
- Free flow and bubble jet printers use liquid inks, although the actual printing process of free flow ink jet printers differs from bubble jet printers.
- Heat activated transfer ink solids change to a gas at about 400° F., and have a high affinity for polyester at the activation temperature and a limited affinity for most other materials. Once the gassification bonding takes place, the ink is permanently printed and highly resistant to change or fading caused by laundry products.
- the process of printing heat sensitive ink solids such as sublimation inks by means of a phase change ink jet printer is similar to the process described in Hale, U.S. Pat. Nos. 5,246,518, 5,248,363 and 5,302,223.
- the use of heat by all ink jet printers presents the problem recognized in the Hale patents of printing heat activated inks in a non activated form by means of such printers, since the ink is exposed to high temperatures by the printer.
- Bubble jet printers for example, heat the ink during the printing process to around the boiling point of the ink solvent, which is typically water. Free flow ink jet printers use heat to form pressure which transports the ink during the printing process.
- liquid inks as required by free flow and bubble jet printers, presents a new set of problems when trying to print ink solids.
- the orifices or nozzles of free flow and bubble jet printers are not designed for the dispensing of solids contained within a liquid material.
- the orifices of these printers are typically 5-10 microns in diameter, and clogging of the orifice will occur when ink solids of large particle size or in high volume are transferred through the orifice.
- the ink solids when the ink solids are placed into the liquid, the ink solids tend to separate from the liquid over time and fall to the bottom of the ink container.
- the ink composition is typically sealed in a container at a manufacturing facility, for subsequent mounting of the container within the ink jet printer, meaning that a substantial storage time for the ink composition exists prior to use. Separation of the liquid and solids within the ink formulation presents problems with regard to the mechanical operation of the printer and the print quality achieved from use of the ink formulation. Materials which inhibit separation must also inhibit agglomeration of the solid dye particles, while allowing, and not preventing due to insulation or otherwise, activation of the ink or dye during the final printing at elevated temperatures.
- the present invention is a method of printing heat activated ink solids in a non activated form onto a medium in a desired image by means of an ink jet printer, for subsequent transfer of the image from the medium by heat activation of the ink solids.
- the invention includes ink or dye compositions comprising heat activated ink or dye solids for use with the method.
- the ink compositions presented include solid compositions at ambient temperature for use with phase change ink jet printers, and emulsions or colloids for use with free flow and bubble jet printers.
- the ink solids are transferred in the desired design by means of a printer onto a substrate, which acts as a medium.
- the substrate may be paper, or it may be other material which will facilitate and withstand the transfer temperature, and which facilitates bonding of the ink layer to the substrate.
- the ink jet printer incorporates a thermal process, but the ink solids of the invention do not activate at the operational temperatures of the printer. Heat activation of the ink solids does not take place at the time of printing of the image by the printer, but rather, takes place at the time of the transfer of the image from the medium to the substrate on which the image is permanently applied.
- the non activated ink solids produce a printed image on the medium which is recognizable, but the colors are dull and are not acceptable for most applications.
- Sufficient temperature is then applied to the image to transfer the image from the medium to the substrate on which the image is to permanently appear.
- the heat activates, or sublimates, the ink solids during this transfer from the medium to the substrate.
- the image is then permanently bonded to the substrate.
- the permanent image is sharp, with vivid colors forming the image.
- the ink formulation prepared according to the invention is a liquid
- finely divided dye solids are present in a liquid carrier, in a colloidal or emulsion form.
- An emulsifying enforcing agent which has characteristics of a surfactant, surrounds and shields the dye particles to prevent undesired activation at low heat and to prevent agglomeration of the dye particles.
- the emulsifying enforcing agent allows activation of the dye at higher temperatures.
- FIG. 1 is a block diagram showing the printing process.
- FIG. 2 illustrates an example of a design printed by a printer using the printing process.
- FIG. 3 is a diagrammatic illustration showing exemplary elements of computer and printing systems which could be used to achieve the printing process.
- FIG. 4 is a section of a ribbon used with a color thermal printer demonstrating the three color panels of yellow, magenta and cyan respectively, and a fourth panel having surface preparation material thereon, in a repeating pattern.
- FIG. 5 demonstrates a ribbon on a roll as the ribbon is transported in a thermal printer.
- FIG. 6 shows a section of the ribbon as it comes in contact with the print head of the thermal printer.
- a video camera or scanning device 2 is used to capture an image 3 .
- the image is then input into a computer 4 .
- the computer directs a printer 6 to print the image.
- Any means of forming the an image which may be printed from a computer may be used, including images generated by software.
- Available computer design graphic software may be used, or still photography may be used.
- the design may be photographic, graphic artistic, or simply letters or words.
- the use of cyan, yellow and magenta ink compositions allow the printer to print in full color or multi-color designs.
- heat activated dyes are used, and are transferred to a substrate by the printer without activating the dyes.
- the heat activated dyes are transferred onto the medium by the printer.
- Virtually any material may be used as a substrate which can be printed upon by a printer, and which will withstand the heat activated transfer temperature of approximately 400° F., as described herein.
- This substrate may be any paper commonly used with color ink jet printers, however, standard bond paper may be used, or even a sheet of metal, if the metal can be handled by the printer.
- the image may be permanently transferred, or at a later time.
- the design will be transferred onto a textile, such as a shirt 8 , although the image may be transferred onto other materials, such as metal, ceramic, wood, or plastic.
- the design 3 which is printed onto the medium 9 without activating the ink.
- a temperature which is sufficient to activate the ink solids is then applied. This temperature will typically be around 400° F. This temperature is applied for a time sufficient to heat activate the ink solids.
- a heat transfer machine 10 may be used to accomplish the activation of the inks. Activation, or sublimation, does not take place at the time of printing the image onto the substrate, even though heat may be used to accomplish the printing of the image onto the substrate, but occurs later, such as during the transfer from the medium to the substrate.
- a thermal printer which prints from a ribbon may be used.
- the ribbon 20 is taken from a roll 21 past a platen 22 and print head 24 on to a take up roll 26 .
- FIGS. 4 and 5. The use of cyan, yellow and magenta panels on the ribbon allow the printer to print in full color or multi-color designs.
- the ribbon substrate as used with the printer may be a plastic or a polyester ribbon.
- the dry release, heat activated ink solid may be retained on the ribbon by the use of a heat sensitive material which will release the ink upon the application of heat to the ribbon.
- the printer such as a thermal transfer printer, will transfer the ink in the desired design and colors from the ribbon to the medium at a temperature of approximately 140° F. This temperature is sufficient to release the heat sensitive material to allow printing of the dye, without activating the dye.
- the wax aids in holding the heat activated dye on the substrate in the precise design, eliminating the need for specially coated paper, while also producing an image which has high resolution.
- Color thermal printers print from a ribbon having multiple panels of ink bound to the ribbon. Typically, the panels have recurring sequences of cyan, yellow and magenta ink, from which multiple color or full color images may be produced. In use, the thermal printer makes four passes to print the image from the ribbon. The color image is printed in the desired form and image by means of the three color panels present on the ribbon.
- Phase change ink jet printers use an ink composition which is solid at ambient temperature.
- the ink composition may be in a solid stick form.
- This “ink stick” comprises heat activated inks, and a phase change material, or transfer vehicle, which will liquify upon the application of heat to the ink composition.
- a polymer binder and additives may be added to the ink composition.
- the additives may be used to control melting, flow, drying, corrosion and other variables.
- the composition is changed from solid to liquid by melting the ink stick in a controlled fashion, to apply the ink solids to the medium, and achieve printing.
- the melted ink composition is contained in a liquid form in a reservoir at the necessary elevated temperature to maintain the ink composition in liquid form.
- the liquified ink composition is then taken from the reservoir and printed on demand.
- the ink composition may be present in the printer in three or more colors, such as cyan, yellow and magenta, and applied by the printer in combination to achieve multiple color or full color
- the transfer vehicle may be a wax or wax like material, such as a certain polymers having a low molecular weight and low melting point. Since wax and wax like materials in liquid form tend to have an affinity for paper, the transfer vehicle will readily bond with the paper medium, holding the ink solids to the medium, until the ink solids are released by the application of heat which is sufficient to activate and transfer the ink solids.
- a wax or wax like material such as a certain polymers having a low molecular weight and low melting point. Since wax and wax like materials in liquid form tend to have an affinity for paper, the transfer vehicle will readily bond with the paper medium, holding the ink solids to the medium, until the ink solids are released by the application of heat which is sufficient to activate and transfer the ink solids.
- the formulation for an ink composition used with a phase change ink jet printer is as follows:
- the heat sensitive or heat activated dye or ink solid may be a sublimation ink which is finely divided. It is preferred that the solid particle have a diameter which is no larger than 0.1 micron.
- the transfer material is a wax or wax like material which liquifies at a temperature of 70 to 120° C. to allow printing of the ink onto the medium.
- the emulsifying enforcing agent acts as a dispersing agent through which the ink solids are distributed.
- the emulsifying enforcing agent may be one or more polymers or surfactants, which should be anionic.
- the binder may be a polymer which strengthens the ink stick when the ink stick is in solid form.
- the plasticizer increases the solubility of the ink for formulation of the ink stick.
- the foam control agent and viscosity control agent aid in formulating the ink stick.
- the surface tension control agent may be a surfactant. This agent aids in printing of the ink formulation.
- the diffusion control agent helps control the diffusion of the ink as it is applied to the medium.
- the flow control agent helps control the melting temperature and rate of the ink during the printing process.
- Polywax PE500 is a transfer vehicle. This transfer vehicle is a wax-like polymer material. Exxon FN 3505 is a hydrocarbon wax used as part of the transfer vehicle. Other waxes or combinations could be used as the transfer vehicle depending on the printer, its operation temperature, the ink to be printed and the medium to be printed.
- DisperByk 182 is an emulsifying enforcing agent.
- An anionic emulsifying enforcing agent should be used.
- DispersByk is a polymer type surfactant. Vinnapas B1.5 and Piccolastic are used as binders.
- Polygard is an antioxidant which is used for corrosion control.
- Dibutyl phthalate is a plasticizer.
- Free flow ink jet printers and bubble jet ink jet printers use inks which are in a liquid form. Free flow ink jet printers dispense ink through an orifice in an ink container. The printer commands and controls the flow of ink through the orifice to print in the desired manner.
- Bubble jet printers also use inks which are in a liquid form, and which are held in a container. Bubble jet printers use a different orifice or nozzle system than free flow printers. A channel and heating system is used to form a bubble. The formation of the bubble is controlled by the printer by the application of heat to the ink to print as desired.
- the heat activated inks or dyes are solid particles. Free flow and bubble jet printers are designed to be used with liquid inks, but not with inks having solid particulate within the liquid. The presence of solid material clogs the orifice or nozzle of the printer. Further, liquid ink compositions into which a solid particulate is placed or dissolved are not homogenous over time. The solid ink particles in the mixture settle from the liquid toward the bottom of the ink container. This settling increases the clogging of the orifice. Further, print quality is affected if the ink is not consistent.
- the liquid ink composition of the present invention is an emulsion comprised of finely divided heat activated ink solids which are placed in an emulsion by means of an emulsifying enforcing agent which is present in a solvent. Humectants, corrosion inhibitors, surfactants, and anti-foaming agents may also be included in the composition.
- the heat activated dye or ink solid is finely divided and placed into an emulsion by means of the emulsifying agent and the solvent, which may be water.
- the remaining agents may be added to facilitate formulation, storage and/or printing of the liquid ink composition.
- Formulation Example 2 comprises a heat activated yellow ink solid or dye.
- Dipropylene glycol and DMSO are co-solvents.
- Sodium Hydroxide is an inorganic emulsifying enforcing agent, which also acts as a fungicide.
- Distilled water acts as a solvent.
- Cobratec® acts as a corrosion inhibitor.
- a particular ink solid is finely divided to yield a small particle size.
- the particular ink solid of Example 2 will tend to substantially dissolve within sodium hydroxide, which is used as the emulsifying enforcing agent.
- the combination of the sodium hydroxide and the solvent, which is the formulation example is distilled water, yield an emulsion which may be used in bubble jet and free flow ink jet printers.
- a “humectant” is a moisturizing agent.
- the term “humectant” is used to describe agents which are included in ink formulations to regulate the rate at which the ink dries and to control the viscosity of the ink.
- the present invention may comprise one or more humectants which will prevent clogging of the orifice or nozzle. With certain inks, the humectants will regulate the sublimation rate of the inks or dyes as they are transferred from the medium to the object on which the printed design is to permanently appear.
- the humectant in formulation example 2 is dipropylene glycol, which acts as a co-solvent and humectant.
- Sublaprint® Blue 70013 is a heat activated ink or dye solid.
- Lignosol® FTA and ME® 39235 are emulsifying enforcing agents. Lignosol® FTA also acts as a fungicide.
- ME® 39235 is a polymer, and more specifically, it is a polyethylene binder. Diethylene Glycol and DMSO act as humectants. The solvent is distilled water.
- Sublaprint® Blue 70013 is more difficult to sublimate than Bifaxan® Yellow 3GE, and is less soluble in the emulsifying enforcing agent.
- Diethylene glycol is used as a humectant to facilitate sublimation of the Sublaprint® Blue ink solid.
- the heat activated ink solid is finely divided to a small particle size.
- the finely divided ink solid is combined with one or more emulsifying enforcing agents, which are in turn combined with the solvent.
- Formulation Example #4 comprises a heat activated ink solid or dye which is finely divided and combined in an emulsifying enforcing agent.
- the emulsifying enforcing agent or medium is, as with Example #3, Lignosol® FTA and ME® 39235. Distilled water is used as a solvent. Dipropylene Glycol is used as a humectant.
- Formulation Example #4 further comprises an anti-foaming or foaming control agent, DeeFo® 806-102 to retard foaming of the liquid ink composition.
- Formulation Example #4 further comprises a surfactant, which may be Sorbitol®, and a corrosion inhibitor, which, in this example, is NA-SUL®.
- Formulation Examples 2, 3 and 4 are emulsions.
- the particular dye has a tendency to dissolve in the emulsifying enforcing agent.
- Formulation Examples 3 and 4 may also be described as colloids, having finely divided ink particles of not larger than 0.1 microns in diameter present within the disperse medium.
- the invention provides an emulsion or colloid which will work within free flow ink jet printers, piezo electric printers, and bubble jet printers, without experiencing problems relating to orifice clogging which results from the use of an ink solid. Further, the use of an emulsion or colloid prevents the separation of the ink solids from the liquid components, rendering an ink composition which is stable over time.
- the liquid ink formulations are present within the printers in containers. Three or more colors of liquid ink are present.
- the containers may be factory sealed, and as such, the ink formulation may be held within the container for a long period of time.
- the bubble jet printer forms the bubble which is used to print the ink at approximately the boiling point of the ink solvent.
- water will be used as the solvent, so that the ink is exposed to temperatures of 100 degrees C or higher as the ink is printed.
- Comparable temperatures may be used in free flow ink jet printers to create pressure for the purpose of transporting the ink for printing.
- the ink is exposed to temperatures which will activate or sublimate some heat activated inks or dyes.
- the inks or dyes used in the ink compositions herein will not activate or sublimate at the operational temperatures of the printer.
- the liquid ink formulation comprises a liquid carrier.
- the liquid carrier or solvent, may be water.
- An emulsifying enforcing agent which is soluble in the liquid carrier, forms an emulsion or a colloid in the liquid carrier.
- the emulsifying enforcing agent has an affinity for the heat activated dye, and attaches to, or may surround, all or part of individual particles of the dye particles.
- the heat activated dye as used is a finely divided solid which is substantially insoluble in the liquid carrier.
- the dye particles when placed in a liquid, will tend to agglomerate, vastly reducing, and practically eliminating, the efficacy of the ink formulation.
- the emulsifying enforcing agent is used to form an emulsion or a colloid, and in the present invention, also surrounds and shields, and thereby separates, the individual dye particles from the liquid carrier and from each other, preventing agglomeration of the dye particles, and thereby preventing the ink formulation from clogging the orifices of the printer, such as the ink jets.
- the emulsifying enforcing agent shields and insulates the dye particles, preventing activation or sublimation of the dye due to exposure to heat present in the printer and the printer processes.
- the emulsifying enforcing agent shields the dye particles, and improves the shelf life of the ink formulation. The adverse effects of heat, chemical reactions, light, time, and other factors that may be present in the packaging environment, or any environment within or surrounding the printer, or printing processes are eliminated or reduced by the emulsifying enforcing agent.
- the insulation properties of the emulsifying enforcing agent are such that heat activation of the heat activated dye is achieved during final transfer of the image from the medium, which is performed at, or above, the temperature at which the dye activates, and the required optical density of the dye after final transfer by heat activation is attained.
- An example of an emulsifying enforcing agent which will achieve the objects of the invention, when used with water as a liquid carrier, is a metallic sulfonate salt known as lignin sulfonate.
- lignin sulfonates are sold under various brand names, including Lignosol and Raykrome.
- Other lignin products which may be used as the emulsifying enforcing agent to produce stable dispersion/emulsion systems include kraft lignin products and oxylignins.
- lignin materials may be categorized by the two main processes in manufacturing lignins: kraft pulping and sulfite pulping. Each of the processes produce lignin materials with different structures and molecular weights, and therefore, they exhibit different performance properties in dye dispersing, stabilizing and emulsification. Other than these two groups, there is a group of lignin products called oxylignins which are derived from lignins that have been oxidized and have a reduced number of sulfonic and methoxyl groups and increased number of functional phenolic, hydroxyl and carboxylic groups.
- Lignin products can be further modified through processes or reverse processes of sulfonation, methylation, carboxylation and fractionation, etc. in order to change their chemical and physical properties, such as water solubilities in different pH ranges, molecular weight, heat stability and emulsification ability.
- Lignin sulphonate, kraft lignins, or oxylignins can be used as dye dispersant/emulsifying enforcing agents in the invention to generate stable sublimation or heat sensitive dye emulsion/colloid systems, with proper adjustment of solvent and usage level.
- Lignosulfonate products such as Maprasperse CBA-1 (Lignotech), Marasperse 52CP (Lignotech), Lignosol FTA (Lignotech), Lignosol SFX-65 (Lignotech), Temsperse S002 (Temfibre, Inc.) Stepsperse DF series (Stephan Co.), and Weschem NA-4 (Wesco Technologies, LTD) may be used.
- Kraft lignin products such as Diwatex XP (Lignotech), and Reax 85 (Westvaco), and oxylignin products such as Marasperse CBOS-6 and Vanisperse CB are suitable for use as the emulsifying enforcing agent in the ink formulation of the present invention.
- the resulting aqueous system forms a double-layer structure, with a dye particle in the center surrounded by lignin molecules and another hydrated layer on the outer layer, to shield the dye particles from reagglomerating, and from the effects of chemical and physical changes introduced during storage or printing of the ink formulation.
- Other materials can be used as either emulsifying enforcing agents or as additives to improve the emulsion/colloid stability, and thereby enchance the printing quality, by eliminating clogging and kogation at the print head.
- These materials may comprise a concentration from 0.1% to 15% by weight of the total formulation without damaging the sublimation heat transfer quality of the heat-sensitive dye at the heat transfer stage.
- These materials can be added into the system during the process of reducing the particle size of the dyes, or after the dye particles have been dispersed into the aqueous solution. These materials function also as emulsion/colloid stabilizers, leveling agents, wetting agents, or foam control agents.
- alkylaryl polyether alcohol nonionic surfactants such as Triton X series (Octylphenoxy-polyethoxyethanol); alkylamine ethoxylates nonionic surfactants such as Triton FW series, Triton CF-10, and Tergitol (Union Carbide Chemicals); polysorbate products such as Tween (ICI Chemicals and Polymers); polyalkylene and polyalkylene modified surfactants, such as Silwet surfactants (polydimethylsioxane copolymers) and CoatOSil surfactants from OSI Specialties; alcohol alkoxylates nonionic surfactants, such as Renex, BRIJ, and Ukanil; Sorbitan ester products such as Span and Arlacel; alkoxylated esters/PEG products, such as Tween, Atlas, Myrj and Cirrasol surfactants from ICI Chemicals and Polymers; unsaturated alcohol products such as surfy
- the solid dyes which are used in the ink formulation and in the printing process have a particle size which is too large for use in ink jet printers, as such dyes are currently commercially available.
- the particle size and nonsolublilty in water also presents other problems previously discussed.
- the dye must be finely divided, which may be accomplished using mills, grinders, homogenizers or micronizers.
- One or more different emulsion enforcing agents including surfactants dispersants, emulsifying agents, wetting agents, defoamers or anti-foamers, or corrosion inhibitors may be used in the process to improve and facilitate the process of finely dividing the dye.
- grinding devices to finely divide the dye include microfluidizers, roller mills, vertical mills, horizontal mills, jet mills, ball mills, attrition mills, and ultrasonic micronizer/homogenizing mills.
- the heat sensitive dye is mixed with the emulsifying enforcing agent, and/or other additives and co-solvents, and deionized distilled water.
- the dry chemicals are mechanically mixed, dispersed into the liquid phase, and then fed into grinding facility.
- the grinding device is operated while monitoring temperature, pressure, viscosity, interfacial tension, surface tension, pH value and flow speed, without activating the heat sensitive dye, until the mean diameter of the dye particles is between 0.1 to 0.5 microns.
- Particles which have a diameter of larger than 0.2-0.5 microns should be eliminated from the composition, such as by filtration or centrifuge.
- the resulting ink composition has a mean particle size of 0.2 microns or less, with the solid percentage ranging from 0.05%-10% by weight, to produce an ink composition which achieves the objectives of the present invention.
Abstract
Description
Material | Weight % | ||
Heat Activated Dye/Ink Solid | 5-30 | ||
Transfer Vehicle | 20-70 | ||
Emulsifying Enforcing Agent | 1-20 | ||
Binder | 0-30 | ||
Plasticizer | 0-15 | ||
Foam Control Agent | 0-10 | ||
Viscosity Control Agent | 0-10 | ||
Surface Tension Control Agent | 0-10 | ||
Diffusion Control Agent | 0-10 | ||
Flow Control Agent | 0-15 | ||
Corrosion Control Agent | 0-10 | ||
Antioxidant | 0-5 | ||
TOTAL | 100% | ||
Material | Weight % | ||
Sublaprint ® Blue 700141 | 10.0 | ||
Polywax ® PE5002 | 10.0 | ||
Exxon FN ® 35053 | 58.0 | ||
DisperByk ® 1824 | 0.5 | ||
Vinnapas ® B1.55 | 1.5 | ||
Piccolastic ® A256 | 10.0 | ||
Polygard ®7 | 5.0 | ||
Dibutyl Phthalate | 5.0 | ||
Total: | 100.0 | ||
1Keystone Aniline Coporation | |||
2Petrolite Corp. | |||
3Exxon Chemical Co. | |||
4BYK-Chemie, USA | |||
5Wacker Chemicals (USA) | |||
6Hercules Inc. | |||
7Uniroyal Chemical Co. |
Material | Weight % | ||
Heat Activated Dye/Ink Solid | 5-30 | ||
Emulsifying Enforcing Agent | 1-20 | ||
Binder | 0-30 | ||
Humectants | 0-40 | ||
Foam Control Agent | 0-10 | ||
Fungicide | 0-2 | ||
Viscosity Control Agent | 0-10 | ||
Surface Tension Control Agent | 0-10 | ||
Diffusion Control Agent | 0-10 | ||
Flow Control Agent | 0-15 | ||
Evaporation Control Agent | 0-20 | ||
Corrosion Control Agent | 0-10 | ||
Cosolvent | 0-30 | ||
Solvent | 30-90 | ||
TOTAL | 100% | ||
FORMULATION EXAMPLE #2 - Yellow Ink-Jet Formula: |
Material | Weight % | ||
Bafixan ® Yellow 3FE8 | 2.0 | ||
Dipropylene Glycol | 4.5 | ||
DMSO | 1.5 | ||
Cobratec ®9 | 0.45 | ||
NaOH (10N) | 3.0 | ||
Distilled H2O | 88.55 | ||
Total: | 100 | ||
8BASF Corporation | |||
9PMC Specialties |
|
Material | Weight % | ||
Sublaprint ® Blue 7001310 | 1.0 | ||
Lignosol ® FTA11 | 3.5 | ||
ME ® 3923512 | 10.0 | ||
Diethylene Glycol | 9.5 | ||
DMSO | 1.0 | ||
Distilled H2O | 75.0 | ||
Total: | 100.00 | ||
10Keystone Analine Corporation | |||
11Lignotech (U.S.) Inc. | |||
12Michelman, Inc. |
Material | Weight % | ||
Intratherm ® Brill Red P-31 NT13 | .5 | ||
Lignosol ® FTA14 | 3.0 | ||
ME ® 3923515 | 11.0 | ||
NA-SUL ®16 | 1.0 | ||
DeeFo ® 806-10217 | 0.2 | ||
Sorbitol | 0.5 | ||
Dipropylene Glycol | 3.5 | ||
Distilled H2O | 79.3 | ||
Total: | 100 | ||
13 Crompton & Knowles Corporation | |||
14 Lignotech (U.S.) Inc. | |||
15 Michelman, Inc. | |||
16 King Industries | |||
17 Ultra Additives |
Claims (23)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/206,262 US6425331B1 (en) | 1990-07-09 | 1998-10-27 | Permanent heat activated printing process |
US09/411,421 US6439710B1 (en) | 1994-02-10 | 1999-10-01 | Printed media produced by permanent heat activated printing process |
US09/661,931 US6450098B1 (en) | 1994-03-08 | 2000-09-14 | Permanent heat activated ink jet printing process |
US09/963,060 US6618066B2 (en) | 1990-07-09 | 2001-09-25 | Permanent heat activated printing process |
US10/015,138 US6488370B2 (en) | 1994-02-10 | 2001-11-07 | Printed media produced by permanent heat activated printing process |
US10/146,283 US6966643B2 (en) | 1994-03-08 | 2002-07-02 | Permanent heat activated ink jet printing process |
Applications Claiming Priority (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US54960090A | 1990-07-09 | 1990-07-09 | |
US07/724,610 US5302223A (en) | 1990-07-09 | 1991-07-02 | Permanent heat sensitive transfer printing process |
US08/195,851 US5431501A (en) | 1990-07-09 | 1994-02-10 | Printing method of surface coating a substrate |
US08/207,756 US5487614A (en) | 1990-07-09 | 1994-03-08 | Method of printing a multiple color image using heat sensitive inks |
US08299736 US5488907C1 (en) | 1990-07-09 | 1994-09-01 | Permanent heat activated transfer printing process and composition |
US08/506,894 US5734396A (en) | 1994-09-01 | 1995-07-25 | Permanent heat activated transfer printing process and composition |
US08/565,999 US5601023A (en) | 1990-07-09 | 1995-12-01 | Permanent heat activated transfer printing process and composition |
US74942696A | 1996-11-15 | 1996-11-15 | |
US09/206,262 US6425331B1 (en) | 1990-07-09 | 1998-10-27 | Permanent heat activated printing process |
Related Parent Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/565,999 Continuation-In-Part US5601023A (en) | 1990-07-09 | 1995-12-01 | Permanent heat activated transfer printing process and composition |
US74942696A Continuation | 1990-07-09 | 1996-11-15 | |
US09/206,262 Continuation US6425331B1 (en) | 1990-07-09 | 1998-10-27 | Permanent heat activated printing process |
Related Child Applications (6)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/195,851 Continuation-In-Part US5431501A (en) | 1990-07-09 | 1994-02-10 | Printing method of surface coating a substrate |
US09/206,262 Continuation US6425331B1 (en) | 1990-07-09 | 1998-10-27 | Permanent heat activated printing process |
US09/411,421 Continuation-In-Part US6439710B1 (en) | 1994-02-10 | 1999-10-01 | Printed media produced by permanent heat activated printing process |
US09/661,931 Continuation-In-Part US6450098B1 (en) | 1994-03-08 | 2000-09-14 | Permanent heat activated ink jet printing process |
US09/963,060 Continuation US6618066B2 (en) | 1990-07-09 | 2001-09-25 | Permanent heat activated printing process |
US10/015,138 Continuation-In-Part US6488370B2 (en) | 1994-02-10 | 2001-11-07 | Printed media produced by permanent heat activated printing process |
Publications (2)
Publication Number | Publication Date |
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US09/963,060 Expired - Fee Related US6618066B2 (en) | 1990-07-09 | 2001-09-25 | Permanent heat activated printing process |
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US09/963,060 Expired - Fee Related US6618066B2 (en) | 1990-07-09 | 2001-09-25 | Permanent heat activated printing process |
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US20040239547A1 (en) * | 2003-01-29 | 2004-12-02 | Heinrich-Martin Boehm | Method and circuit for conforming an analog actual signal to a digital desired signal |
US20090097044A1 (en) * | 2005-12-28 | 2009-04-16 | Moshe Zach | Digital printing station in a multi-station discrete media printing station |
US20100029486A1 (en) * | 2008-07-31 | 2010-02-04 | Michael Dean Willis | Extended release tablet and method for making and using same |
WO2010118187A2 (en) | 2009-04-07 | 2010-10-14 | Sensient Colors Inc. | Self-dispersing particles and methods for making and using the same |
US7829146B2 (en) | 2005-06-07 | 2010-11-09 | S.C. Johnson & Son, Inc. | Method of neutralizing a stain on a surface |
US7927416B2 (en) | 2006-10-31 | 2011-04-19 | Sensient Colors Inc. | Modified pigments and methods for making and using the same |
US7964033B2 (en) | 2007-08-23 | 2011-06-21 | Sensient Colors Llc | Self-dispersed pigments and methods for making and using the same |
US8048517B2 (en) | 2005-06-07 | 2011-11-01 | S.C. Johnson & Son, Inc. | Composition for application to a surface |
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US8734533B2 (en) | 2005-06-07 | 2014-05-27 | S.C. Johnson & Son, Inc. | Composition for application to a surface |
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US20040239547A1 (en) * | 2003-01-29 | 2004-12-02 | Heinrich-Martin Boehm | Method and circuit for conforming an analog actual signal to a digital desired signal |
US8734533B2 (en) | 2005-06-07 | 2014-05-27 | S.C. Johnson & Son, Inc. | Composition for application to a surface |
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US8048517B2 (en) | 2005-06-07 | 2011-11-01 | S.C. Johnson & Son, Inc. | Composition for application to a surface |
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US8163075B2 (en) | 2006-10-31 | 2012-04-24 | Sensient Colors Llc | Inks comprising modified pigments and methods for making and using the same |
US8475905B2 (en) | 2007-02-14 | 2013-07-02 | High Voltage Graphics, Inc | Sublimation dye printed textile |
US7964033B2 (en) | 2007-08-23 | 2011-06-21 | Sensient Colors Llc | Self-dispersed pigments and methods for making and using the same |
US8118924B2 (en) | 2007-08-23 | 2012-02-21 | Sensient Colors Llc | Self-dispersed pigments and methods for making and using the same |
US8343524B2 (en) | 2008-07-31 | 2013-01-01 | Clarke Mosquito Control Products, Inc. | Extended release tablet and method for making and using same |
US20100029486A1 (en) * | 2008-07-31 | 2010-02-04 | Michael Dean Willis | Extended release tablet and method for making and using same |
US9221986B2 (en) | 2009-04-07 | 2015-12-29 | Sensient Colors Llc | Self-dispersing particles and methods for making and using the same |
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US9193214B2 (en) | 2012-10-12 | 2015-11-24 | High Voltage Graphics, Inc. | Flexible heat sealable decorative articles and method for making the same |
US10011120B2 (en) | 2013-07-25 | 2018-07-03 | The Hillman Group, Inc. | Single heating platen double-sided sublimation printing process and apparatus |
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US9120326B2 (en) | 2013-07-25 | 2015-09-01 | The Hillman Group, Inc. | Automatic sublimated product customization system and process |
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Also Published As
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---|---|
US6618066B2 (en) | 2003-09-09 |
US20020050221A1 (en) | 2002-05-02 |
US20020029714A1 (en) | 2002-03-14 |
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